Husqvarna Blower 125BT 141B 155B 165BT User Manual

Operator’s manual  
125BT 141B 155B  
165BT  
Please read the operator’s manual carefully and make sure you understand  
the instructions before using the machine.  
English  
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KEY TO SYMBOLS  
Other symbols/decals on the machine refer to special  
certification requirements for certain markets.  
Symbols  
WARNING! The machine can be a dangerous  
tool if used incorrectly or carelessly, which can  
cause serious or fatal injury to the operator or  
others.  
Switch off the engine by moving the stop  
switch to the STOP position before carrying  
out any checks or maintenance.  
Always wear approved protective gloves.  
Regular cleaning is required.  
Visual check.  
Please read the operator’s manual carefully  
and make sure you understand the  
instructions before using the machine.  
Always wear:  
Approved hearing protection  
Protective goggles or a visor  
This product is in accordance with applicable  
EC directives.  
Protective goggles or a visor must be worn.  
Always wear approved protective gloves.  
Wear sturdy, non-slip boots.  
The blower can forcibly throw objects that  
can bounce back. This can result in  
serious eye injuries.  
The blower operator must ensure that no  
people or animals come closer than 10  
metres. When several operators are  
working at the same site a safety  
distance of at least 10 metres must be in effect.  
Noise emission to the environment according  
to the European Community’s Directive. The  
machine’s emission is specified in chapter  
Technical data and on label.  
2 – English  
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CONTENTS  
Contents  
Note the following before starting:  
KEY TO SYMBOLS  
Please read the operator’s manual carefully.  
Symbols ........................................................................  
CONTENTS  
Long-term exposure to noise can result in permanent hearing  
impairment. So always use approved hearing protection.  
Contents .......................................................................  
Note the following before starting: .................................  
SAFETY INSTRUCTIONS  
WARNING! Under no circumstances may the  
design of the machine be modified without  
the permission of the manufacturer. Always  
use genuine accessories. Non-authorized  
modifications and/or accessories can result  
in serious personal injury or the death of the  
operator or others.  
!
Personal protective equipment ......................................  
Machines safety equipment .........................................  
Checking, maintaining and servicing the machines  
safety equipment ...........................................................  
General safety precautions ...........................................  
General working instructions ........................................  
WHAT IS WHAT?  
WARNING! A blower is a dangerous tool if  
What is what? ...............................................................  
WHAT IS WHAT?  
9
used carelessly or incorrectly and can cause  
serious, even fatal injuries. It is extremely  
important that you read and understand the  
contents of this Operator’s manual.  
!
What is what? ............................................................... 10  
ASSEMBLY  
Assembly of the blower ................................................. 11  
FUEL HANDLING  
Husqvarna AB has a policy of continuous product  
development and therefore reserves the right to modify the  
design and appearance of products without prior notice.  
Fuel ............................................................................... 12  
Fuelling ......................................................................... 12  
STARTING AND STOPPING  
Starting and stopping .................................................... 13  
MAINTENANCE  
Carburettor .................................................................... 14  
Muffler ........................................................................... 14  
Cooling system ............................................................. 14  
Spark plug ..................................................................... 15  
Air filter .......................................................................... 15  
Maintenance schedule .................................................. 16  
TECHNICAL DATA  
Technical data ............................................................... 17  
EC-declaration of conformity ......................................... 18  
EC-declaration of conformity ......................................... 19  
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SAFETY INSTRUCTIONS  
A breathing mask should be used when there is a risk of  
dust.  
Personal protective equipment  
WARNING!You must use approved personal  
protective equipment whenever you use the  
machine. Personal protective equipment  
!
cannot eliminate the risk of injury but it will  
reduce the degree of injury if an accident  
does happen. Ask your dealer for help in  
choosing the right equipment. Please read  
the operator’s manual carefully and make  
sure you understand the instructions before  
using the machine.  
Always have a first aid kit nearby.  
WARNING! Listen out for warning signals or  
shouts when you are wearing hearing  
protection. Always remove your hearing  
Machine s safety equipment  
!
This section describes the machines safety equipment, its  
purpose, and how checks and maintenance should be carried  
out to ensure that it operates correctly. See the ”What is  
what?” section to locate where this equipment is positioned  
on your machine.  
protection as soon as the engine stops.  
Gloves should be worn when necessary.  
The life span of the machine can be reduced and the risk of  
accidents can increase if machine maintenance is not carried  
out correctly and if service and/or repairs are not carried out  
professionally. If you need further information please contact  
your nearest service workshop.  
Wear hearing protection that provides adequate noise  
reduction.  
WARNING! Never use a machine that has  
faulty safety equipment! Carry out the  
inspection, maintenance and service  
routines listed in this section.  
!
Stop switch  
Always wear approved eye protection. If you use a visor  
then you must also wear approved protective goggles.  
Approved protective goggles must comply with standard  
ANSI Z87.1 in the USA or EN 166 in EU countries.Visors  
must comply with standard EN 1731.  
Use the stop switch to switch off the engine.  
Blows from branches or objects that are thrown can  
damage the eyes.  
Quick release  
(141B, 155B, 165BT)  
At the front is an easily accessible, quick release. Use this if  
the engine catches fire or in any other emergency situation  
that requires you to free yourself from the machine and  
harness.  
Wear sturdy, non-slip boots.  
Wear clothes made of a strong fabric and avoid loose  
clothing that can catch on twigs and branches. Always  
wear heavy, long pants. Do not wear jewellery, shorts  
sandals or go barefoot.Secure hair so it is above shoulder  
level.  
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SAFETY INSTRUCTIONS  
Vibration damping system  
WARNING! Bear in mind that:  
Your machine is equipped with a vibration damping system  
that is designed to minimize vibration and make operation  
easier.  
!
Engine exhaust fumes contain carbon  
monoxide, which can cause carbon  
monoxide poisoning. For this reason you  
should not start or run the machine indoors,  
or anywhere that is poorly ventilated.  
The exhaust fumes from the engine are hot  
and may contain sparks which can start a  
fire. Never start the machine indoors or near  
combustible material!  
The machine’s vibration damping system reduces the transfer  
of vibrations.  
WARNING! The inside of the muffler contain  
chemicals that may be carcinogenic. Avoid  
contact with these elements in the event of a  
damaged muffler.  
!
WARNING! Overexposure to vibration can  
lead to circulatory damage or nerve damage  
in people who have impaired circulation.  
!
Checking,maintaining and servicing  
Contact your doctor if you experience  
symptoms of overexposure to vibration.  
Such symptoms include numbness, loss of  
feeling, tingling, pricking, pain, loss of  
strength, changes in skin colour or  
condition.These symptoms normally appear  
in the fingers, hands or wrists.The risk  
increases at low temperatures.  
the machine s safety equipment  
WARNING! All servicing and repair work on  
the machine requires special training.This is  
!
especially true of the machine s safety  
equipment. If your machine fails any of the  
checks described below you must contact  
your service agent.When you buy any of our  
products we guarantee the availability of  
professional repairs and service. If the  
retailer who sells your machine is not a  
servicing dealer, ask him for the address of  
your nearest service agent.  
Muffler  
The muffler is designed to keep noise levels to a minimum and  
to direct exhaust fumes away from the user.  
WARNING! Never use a machine with faulty  
safety equipment.The machine’s safety  
equipment must be checked and maintained  
as described in this section. If your machine  
fails any of these checks contact your  
service agent to get it repaired.  
!
In countries that have a warm and dry climate there is a  
significant risk of fire. We therefore fit certain mufflers with a  
spark arrestor mesh. Check whether the muffler on your  
machine is fitted with this kind of mesh.  
Stop switch  
Start the engine and make sure the engine stops when  
you move the stop switch to the stop setting.  
For mufflers it is very important that you follow the instructions  
on checking, maintaining and servicing your machine. See  
instructions under the heading Checking, maintaining and  
servicing the machine’s safety equipment.  
WARNING! Mufflers fitted with catalytic  
converters get very hot during use and  
remain so for some time after stopping.This  
also applies at idle speed. Contact can result  
in burns to the skin. Remember the risk of  
fire!  
!
English – 5  
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SAFETY INSTRUCTIONS  
Vibration damping system  
General safety precautions  
IMPORTANT INFORMATION  
The only accessories you can use with this engine unit are  
those we recommend in the ”Technical data chapter”.  
Regularly check the vibration damping units for cracks or  
deformation.  
Never use the machine if you are tired, if you have drunk  
alcohol, or if you are taking medication that could affect your  
vision, your judgement or your co-ordination.  
Wear personal protective equipment. See instructions  
under the heading Personal protective equipment.  
Never use a machine that has been modified in any way  
from its original specification.  
Check that the vibration damping element is undamaged  
and securely attached.  
Never use a machine that is faulty. Carry out the checks,  
maintenance and service instructions described in this  
manual.Some maintenance and service measures must be  
carried out by trained and qualified specialists. See  
instructions under the heading Maintenance.  
Muffler  
All covers and guards must be fitted before starting. Make  
sure the spark plug cap and HT lead are not damaged.  
Otherwise you could get an electric shock.  
Never use a machine that has a faulty muffler.  
The blower operator must ensure that no people or animals  
come closer than 10 metres. When several operators are  
working at the same site a safety distance of at least 10  
metres must be in effect.  
Starting  
Regularly check that the muffler is securely attached to  
the machine.  
Never start the machine indoors. Exhaust fumes can be  
dangerous if inhaled.  
Observe the surroundings and ensure that no people or  
animals can come into contact with the blower.  
Place the machine on the ground, press the machine body  
against the ground with your left hand (NOTE! Not with  
your foot). Then grasp the starter handle with your right  
hand and pull the cord.  
If the muffler on your machine is fitted with a spark arrestor  
mesh this must be cleaned regularly. A blocked mesh will  
cause the engine to overheat and may lead to serious  
damage.  
Never use a muffler with a defective spark arrestor mesh.  
Quick release  
Fuel safety  
(141B, 155B, 165BT)  
Check that the harness straps are correctly positioned. Once  
the harness and machine have been adjusted, check that the  
harness quick release works correctly.  
Always use a fuel container with an anti-spill valve.  
Never refuel the machine while the engine is running.  
Always stop the engine and let it cool for a few minutes  
before refuelling.  
Make sure there is plenty of ventilation when refuelling or  
mixing fuel (petrol and 2-stroke oil).  
Avoid all skin contact with fuel. Fuel is a skin irritant and  
may even cause skin changes.  
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SAFETY INSTRUCTIONS  
Move the machine at least 3 m from the refuelling point  
before starting it.  
Adjusting the harness  
WARNING! The harness must always be  
worn when working with the machine.  
Failure to do so means you will be unable to  
manoeuvre safely and this can result in  
injury to yourself or others. Never wear a  
harness with a defective quick release.  
!
Quick release  
Never start the machine:  
(141B, 155B, 165BT)  
-
If you have spilt fuel on it. Wipe off the spillage and  
allow remaining fuel to evaporate.  
At the front is an easily accessible, quick release. Use this if  
the engine catches fire or in any other emergency situation  
that requires you to free yourself from the machine and  
harness.  
-
If you have spilt fuel on yourself or your clothes,  
change your clothes. Wash any part of your body that  
has come in contact with fuel. Use soap and water.  
Pull out the red strap.  
-
If the machine is leaking fuel.Check regularly for leaks  
from the fuel cap and fuel lines.  
Transport and storage  
Store and transport the machine and fuel so that there is  
no risk of any leakage or fumes coming into contact with  
sparks or naked flames, for example, from electrical  
machinery, electric motors, electrical relays/switches or  
boilers.  
When storing and transporting fuel always use approved  
containers intended for this purpose.  
The hip strap and one shoulder strap will then be  
automatically released at the same time and the harness  
and engine unit will slide to the ground.  
When storing the machine for long periods the fuel tank  
must be emptied. Contact your local petrol station to find  
out where to dispose of excess fuel.  
Spreading the load on your shoulders  
A well-adjusted harness and machine makes work much  
easier. Adjust the harness for the best working position.  
Tension the side straps so that the weight is evenly distributed  
across both shoulders.  
Ensure the machine is cleaned and that a complete  
service is carried out before long-term storage.  
WARNING! Take care when handling fuel.  
Bear in mind the risk of fire, explosion and  
inhaling fumes.  
!
General working instructions  
IMPORTANT! This section considers basic safety rules  
when working with blowers. If you encounter a situation  
where you are uncertain how to proceed you should ask an  
expert.Contact your dealer or your service workshop.Avoid  
all usage which you consider to be beyond your capability.  
Show consideration to persons in your surroundings by  
avoiding using the machine at unsuitable times, such as late  
in the evening or early in the morning. Read through and  
follow the simple directions so that you disturb your  
surroundings as little as possible.  
Use the blower with the lowest possible throttle. It is  
seldom necessary to use full throttle, and many work  
procedures can be done at half throttle. A lower throttle  
means less noise and less dust, and it is also easier to  
keep control over the rubbish collected together/moved.  
English – 7  
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SAFETY INSTRUCTIONS  
Use a rake or a brush to release rubbish stuck to the  
ground.  
Basic working techniques  
Adjust the harness so that the machine is easy to carry.  
Hold the opening of the blower as close to the ground as  
possible.  
WARNING! Watch out for thrown objects.  
Observe your surroundings. If anyone approaches your  
work area, set the throttle control to the lowest throttle until  
the person is at a safe distance. Direct the blower away  
from people, animals, play areas, and cars etc.  
Always wear eye protection. Stones,  
rubbish, etc. can be thrown up into the eyes  
!
causing blindness or serious injury. Keep  
unauthorised persons at a distance.  
Children, animals, onlookers and helpers  
should be kept outside the safety zone of 10  
m. Stop the machine immediately if anyone  
approaches.  
Clean up afterwards. Make sure that you have not blown  
rubbish into someone’s garden.  
Basic safety rules  
WARNING! Always stop the engine before  
cleaning.  
!
No unauthorised persons or animals may be present in  
the working area, which is 10 metres.  
The speed of the air jet is controlled with the throttle.  
Select the speed that best suits the application. To avoid  
holding your finger on the throttle all the time when using  
the blower, the required throttle can be set with the throttle  
adjuster (D). Full throttle is obtained when the throttle  
adjuster is pushed in fully.  
The powerful currents of air can move objects at such a  
speed that they can bounce back and cause serious eye  
injuries.  
D
C
Do not direct the air jet towards people or animals.  
Make sure that the air intake is not blocked by leaves or  
rubbish. This will reduce the machine’s air blowing  
capacity and increase the engine’s working temperature,  
which can lead to engine failure. Stop the engine and  
remove the object.  
Stop the engine before assembling or dismantling  
accessories or other parts.  
Do not use the machine in bad weather, such as dense  
fog, heavy rain, strong wind, intense cold, etc. Working in  
bad weather is tiring and can lead to dangerous  
conditions, e.g. slippery surfaces.  
Make sure you can move and stand safely.Check the area  
around you for possible obstacles (roots, rocks, branches,  
ditches, etc.) in case you have to move suddenly. Take  
great care when working on sloping ground.  
Never put the machine down with the engine running  
unless you have it in clear sight.  
Engine exhaust fumes contain carbon monoxide, which  
can cause carbon monoxide poisoning. For this reason  
you should not start or run the machine indoors, or  
anywhere that is poorly ventilated.  
Be aware of the wind direction. Work with the wind to  
make your work easier.  
Using the blower to move large piles is time consuming  
and creates unnecessary noise.  
The blower must not be used while on a ladder or  
scaffolding.  
CAUTION! Do not use the machine unless you are able to  
call for help in the event of an accident.  
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WHAT IS WHAT?  
What is what?  
1
2
3
4
5
6
7
Spark plug  
Choke control  
Air filter  
8
9
Handlebar  
Blow pipe  
10 Throttle control  
11 Stop switch  
Starter handle  
Fuel tank  
Harness  
12 Throttle adjuster  
13 Safety strap  
Muffler  
14 Operators manual  
English – 9  
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WHAT IS WHAT?  
What is what?  
1
2
3
4
5
6
Spark plug  
Choke control  
Air filter  
7
8
9
Muffler  
Blow pipe  
Throttle control  
Starter handle  
Fuel tank  
10 Stop switch  
11 Throttle adjuster  
12 Operators manual  
Harness  
10 – English  
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ASSEMBLY  
Assembly of the blower  
1
2
3
4
5
Connect the flexible hose (A) to the fan’s outlet tube (B) with a hose clamp.  
Connect the operating tube (C) to the flexible hose with a hose clamp.  
Fit the control handle (D) on the operating tube (C).  
Fit the handlebar (E) on the operating tube and tighten the screw (F). (141B, 155B, 165BT)  
Connect the intermediate tube (G) and air nozzle (H). Push the tubes together and turn them so that they lock together.  
CAUTION! The operating tube can be turned round its axis  
to direct the air jet.  
English – 11  
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FUEL HANDLING  
Mixing  
Fuel  
Always mix the petrol and oil in a clean container intended  
for fuel.  
CAUTION!The machine is equipped with a two-stroke engine  
and must always been run using a mixture of petrol and two-  
stroke engine oil. It is important to accurately measure the  
amount of oil to be mixed to ensure that the correct mixture is  
obtained. When mixing small amounts of fuel, even small  
inaccuracies can drastically affect the ratio of the mixture.  
Always start by filling half the amount of the petrol to be  
used. Then add the entire amount of oil. Mix (shake) the  
fuel mixture. Add the remaining amount of petrol.  
Mix (shake) the fuel mixture thoroughly before filling the  
machine’s fuel tank.  
WARNING! Always ensure there is adequate  
ventilation when handling fuel.  
!
Petrol  
CAUTION!  
Always use a good quality petrol/oil mixture (at least 90  
octane).If your machine is equipped with a catalytic converter  
(see chapter on Technical data) always use a good quality  
unleaded petrol/oil mixture. Leaded petrol will destroy the  
catalytic converter and it will no longer serve its purpose.  
Do not mix more than one month’s supply of fuel at a time.  
If the machine is not used for some time the fuel tank  
should be emptied and cleaned.  
Fuelling  
The lowest recommended octane rating is 90. If you run  
the engine on a petrol with a lower octane rating than 90  
this can cause knocking. This leads to an increased  
engine temperature, which can result in serious engine  
damage.  
WARNING!Taking the following precautions,  
will lessen the risk of fire:  
!
When working at continuous high revs a higher octane  
rating is recommended.  
Do not smoke or place hot objects near fuel.  
Always shut off the engine before refuelling.  
Two-stroke oil  
Always stop the engine and let it cool for a  
few minutes before refuelling.  
For best results and performance use HUSQVARNA two-  
stroke oil, which is specially formulated for our two-stroke  
engines. Mixture 1:50 (2%).  
When refuelling, open the fuel cap slowly so  
that any excess pressure is released gently.  
If HUSQVARNA two-stroke oil is not available, you may  
use another two-stroke oil of good quality that is intended  
for air cooled engines.Contact your dealer when selecting  
an oil. Mixing ratio 1:33 (3%).  
Tighten the fuel cap carefully after refuelling.  
Always move the machine away from the  
refuelling area before starting.  
Never use two-stroke oil intended for water-cooled  
outboard engines, sometimes referred to as outboard oil.  
Move the machine at least 3 m from the refuelling point  
before starting it.  
Never use oil intended for four-stroke engines.  
Two-stroke oil, litre  
Petrol, litre  
2% (1:50)  
0,10  
3% (1:33)  
0,15  
5
10  
15  
20  
0,20  
0,30  
0,30  
0,45  
0,40  
0,60  
Clean the area around the fuel cap. Contamination in the  
tank can cause operating problems.  
Ensure that the fuel is well mixed by shaking the container  
before filling the tank.  
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STARTING AND STOPPING  
Starting  
Starting and stopping  
Hold the body of the machine on the ground using your left  
hand (CAUTION! Not with your foot!).  
Grip the starter handle, slowly pull out the cord with your right  
hand until you feel some resistance (the starter pawls grip),  
now quickly and powerfully pull the cord.  
WARNING! Always move the machine away  
from the refuelling area before starting.  
Place the machine on a flat surface.  
!
Make sure no unauthorised persons are in  
the working area, otherwise there is a risk of  
serious personal injury.The safety distance  
is 10 metres.  
The machine may only be started in its  
complete design. If the machine is started  
without all the guards fitted there is a risk of  
personal injuries.  
Reset the choke when the engine fires, repeat pulling the cord  
until the engine starts. Never twist the starter cord around  
your hand.  
Cold engine  
Ignition:  
CAUTION! Do not pull the starter cord all the way out and do  
not let go of the starter handle when the cord is fully extended.  
This can damage the machine.  
Set the stop switch to the start position.  
Stopping  
The engine is stopped by moving the stop switch to the stop  
position.  
Choke: Set the choke control in the choke position.  
Air purge: Press the air purge diaphragm repeatedly until fuel  
begins to fill the diaphragm. The diaphragm need not be  
completely filled.  
Warm engine  
Use the same starting procedure as for a cold engine but  
without setting the choke control in the choke position.  
English – 13  
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MAINTENANCE  
with a catalytic converter the screen should be checked and  
Carburettor  
cleaned monthly. If the screen is damaged it should be  
replaced. If the screen is frequently blocked, this can be a  
sign that the function of the catalytic converter is impaired.  
Your Husqvarna product has been designed and  
manufactured to specifications that reduce harmful  
emissions. After the engine has used 8-10 tanks of fuel the  
engine will be run-in.To ensure that it continues to run at peak  
performance and to minimise harmful exhaust emissions after  
the running-in period, ask your dealer/service workshop (who  
will have a rev counter at their disposal) to adjust your  
carburettor.  
WARNING!The machine may only be started  
in its complete design. If the machine is  
CAUTION! Never use a machine with a defective muffler.  
!
started without all the guards fitted there is a  
risk of personal injuries.  
Cooling system  
Function  
To keep the working temperature as low as possible the  
machine is equipped with a cooling system.  
The carburettor governs the engine’s speed via the throttle  
control. Air and fuel are mixed in the carburettor. The air/fuel  
mixture is adjustable. Correct adjustment is essential to get  
the best performance from the machine.  
Adjusting the carburettor means that the engine is adapted to  
local operating conditions, e.g.climate, altitude, petrol and the  
type of 2-stroke oil.  
Fine adjustment of the idle speed T  
The cooling system consists of:  
Adjust the idle speed using the idle adjustment screw T, if it is  
necessary to readjust.  
1
2
3
4
Air intake on the starter.  
Fins on the flywheel.  
The T-screw regulates the throttle setting at idle speed. If the  
T-screw is turned clockwise this gives a higher idle speed;  
turning it anti-clockwise gives a lower idle speed. The idle  
speed is correctly adjusted when the engine will run smoothly  
in every position.  
Cooling fins on the cylinder.  
Cylinder cover (directs cold air over the cylinder).  
Clean the cooling system with a brush once a week, more  
often in demanding conditions. A dirty or blocked cooling  
system results in the machine overheating which causes  
damage to the piston and cylinder.  
Rec. idle speed See the Technical data section.  
Muffler  
The muffler is designed to reduce the noise level and to direct  
the exhaust gases away from the operator.The exhaust gases  
are hot and can contain sparks, which may cause fire if  
directed against dry and combustible material.  
Some mufflers are equipped with a special spark arrest  
screen. If your machine is fitted with this type of screen it  
should be cleaned regularly. This is done using a wire brush.  
On mufflers without a catalytic converter the screen should be  
cleaned weekly, or replaced if necessary. On mufflers fitted  
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MAINTENANCE  
Cleaning the air filter  
Spark plug  
Remove the air filter cover and take out the filter.Wash it clean  
in warm, soapy water.  
Ensure that the filter is dry before refitting it.  
The spark plug condition is influenced by:  
An air filter that has been in use for a long time cannot be  
cleaned completely.The filter must therefore be replaced with  
a new one at regular intervals. A damaged air filter must  
always be replaced.  
Incorrect carburettor adjustment.  
An incorrect fuel mixture (too much or incorrect type of  
oil).  
If the machine is used in dusty conditions the air filter should  
be soaked in oil.See instructions under the heading Oiling the  
air filter.  
A dirty air filter.  
These factors cause deposits on the spark plug electrodes,  
which may result in operating problems and starting  
difficulties.  
Oiling the air filter  
If the machine is low on power, difficult to start or runs poorly  
at idle speed: always check the spark plug first before taking  
any further action. If the spark plug is dirty, clean it and check  
that the electrode gap is 0.5/0,6 mm. The spark plug should  
be replaced after about a month in operation or earlier if  
necessary.  
Always use HUSQVARNA filter oil, art. no. 531 00 92-48.The  
filter oil contains a solvent to make it spread evenly through  
the filter.You should therefore avoid skin contact.  
Put the filter in a plastic bag and pour the filter oil over it.  
Knead the plastic bag to distribute the oil. Squeeze the  
excess oil out of the filter inside the plastic bag and pour off  
the excess before fitting the filter to the machine. Never use  
common engine oil. This would drain through the filter quite  
quickly and collect in the bottom.  
CAUTION! Always use the recommended spark plug type!  
Use of the wrong spark plug can damage the piston/cylinder.  
Air filter  
The air filter must be regularly cleaned to remove dust and dirt  
in order to avoid:  
Carburettor malfunctions  
Starting problems  
Loss of engine power  
Unnecessary wear to engine parts.  
Excessive fuel consumption.  
Clean the filter every 25 hours, or more regularly if conditions  
are exceptionally dusty.  
English – 15  
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MAINTENANCE  
Monthly maintenance  
Maintenance schedule  
Below you will find some general maintenance instructions. If  
you need further information please contact your service  
workshop.  
1
3
4
2
Daily maintenance  
5
6
7
3
1
2
1
2
Clean the fuel tank.  
Clean the outside of the carburettor and the space around  
it.  
4
5
6
3
4
Clean the fan and the area around it.  
Check the fuel filter and the fuel hose. Replace if  
necessary.  
5
6
7
Check all cables and connections.  
Replace the spark plug.  
1
2
3
4
5
6
Clean the outside of the machine.  
Check that the throttle control functions safely.  
Check that the stop switch works correctly.  
Clean the air filter. Replace if necessary.  
Check that nuts and screws are tight.  
Check that there are no fuel leaks.  
Check and clean the spark arrestor mesh on the muffler  
(only applies to mufflers fitted with a catalytic converter).  
Weekly maintenance  
1
3
4
2
5
6
7
1
2
Check the starter and starter cord.  
Check that the vibration damping elements are not  
damaged.  
3
Clean the outside of the spark plug. Remove it and check  
the electrode gap.Adjust the gap to 0.5/0,6 mm or replace  
the spark plug.  
4
5
Clean the cooling fins on the flywheel.  
Clean or replace the spark arrestor mesh on the muffler  
(only applies to mufflers without a catalytic converter).  
6
7
Clean the carburettor compartment.  
Clean the cooling fins on the cylinder and check that the  
air intake near the starter is not blocked.  
16 – English  
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TECHNICAL DATA  
Technical data  
Technical data  
Engine  
125BT  
141B  
155B  
165BT  
3
Cylinder displacement, cm  
Cylinder bore, mm  
Stroke, mm  
25,4  
34  
40,2  
40  
48,7  
44  
59,2  
47,1  
34  
28  
32  
32  
Idle speed, rpm  
3300  
7800  
2500  
7500  
2,0/7500  
No  
2500  
7500  
2,2/7500  
No  
3000  
7500  
2,4/7500  
No  
Recommended max. speed:  
Max. engine output, acc. to ISO 8893, kW/ rpm 0,7/7800  
Catalytic converter muffler  
Ignition system  
No  
Type of ignition system  
Spark plug  
Electronic  
NGK BPMR6A  
0,5  
Electronic  
NGK BPMR 7A  
0,6  
Electronic  
NGK BPMR 7A  
0,6  
Electronic  
NGK BPMR 7A  
0,6  
Electrode gap, mm  
Fuel and lubrication system  
Manufacturer/type of carburettor  
Fuel tank capacity, litre  
Weight  
Walbro, membran Walbro, membran Walbro, membran Walbro, membran  
0,5  
1,6  
2,1  
2,2  
Weight without fuel, cutting attachment and  
guard, kg  
5,0  
9,9  
10,2  
12,3  
Noise emissions  
(see note 1)  
Sound power level, measured dB(A)  
101,3  
102  
103,5  
104  
106,7  
107  
104,6  
112  
Sound power level, guaranteed L  
Noise levels  
dB(A)  
WA  
(see note 2)  
Equivalent noise pressure level at the operator’s  
ear, measured according to EN/ISO 11806 and  
ISO 7917, dB(A), min./max.:  
92  
89  
92  
97  
Vibration levels  
Vibration levels at handles, measured according  
2
to EN/ISO 11806 and ISO 7916, m/s  
At idle, left/right handles:  
-/1,2  
-/1,2  
1,2/1,2  
1,2/1,2  
1,2/1,0  
1,2/1,7  
1,2/1,2  
1,2/1,2  
At max. speed, left/right handles:  
Note 1: Noise emissions in the environment measured as sound power (L ) in conformity with EC directive 2000/14/EC.  
WA  
Note 2: Equivalent sound pressure level is calculated as the time-weighted energy total for sound pressure levels under various  
working conditions with the following time distribution: 1/2 idling and 1/2 max speed.  
NOTE! The noise pressure level at operator’s ear and vibrations on the handles are measured with all the approved cutting  
attachments for the machine. The table indicates the lowest and highest values.  
English – 17  
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TECHNICAL DATA  
EC-declaration of conformity  
(Applies to Europe only)  
We, Husqvarna AB, S-561 82 Huskvarna, Sweden, tel: +46 36-146500, declare under sole responsibility that the blowers  
Husqvarna141B and 155 from 2000’s serial numbers and onwards (the year is clearly stated in plain text on the type plate with  
subsequent serial number), are in conformity with the following standards or other normative documents following the provisions  
in the COUNCILS DIRECTIVES:  
of June 22, 1998 ”relating to machinery” 98/37/EC, annex IIA.  
of May 3, 1989 ”relating to electromagnetic compatibility” 89/336/EEC, and applicable supplements.  
of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.  
For information relating to noise emissions, see the chapter Technical data.The following standards have been applied:EN292-2,  
CISPR 12:1997, EN ISO 11806.  
SMP Svensk Maskinprovning AB, Fyrisborgsgatan 3, SE-754 50 Uppsala, Sweden, has performed voluntary type examination on  
behalf of Husqvarna AB. The certificates are numbered: SEC/00/759 - 141B, SEC/00/760 - 155B  
Huskvarna January 3, 2002  
Bo Andréasson, Development manager  
18 – English  
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TECHNICAL DATA  
EC-declaration of conformity  
(Applies to Europe only)  
We, Husqvarna AB, S-561 82 Huskvarna, Sweden, tel: +46 36-146500, declare under sole responsibility that the blowers  
Husqvarna 125BT and 165BT from 2004’s serial numbers and onwards (the year is clearly stated in plain text on the type plate  
with subsequent serial number), are in conformity with the following standards or other normative documents following the  
provisions in the COUNCILS DIRECTIVES:  
of June 22, 1998 ”relating to machinery” 98/37/EC.  
of May 3, 1989 ”relating to electromagnetic compatibility” 89/336/EEC, and applicable supplements.  
of May 8, 2000 ”relating to the noise emissions in the environment” 2000/14/EC.  
For information relating to noise emissions, see the chapter Technical data.The following standards have been applied:EN292-2,  
CISPR 12:1997, EN ISO 11806.  
Huskvarna January 5, 2004  
Bo Andréasson, Development manager  
English – 19  
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